Very often, a seeker is very frustrated as he/she is not able to grasp what is being pointed to by the teacher. This is not uncommon and we will briefly look at what results in this frustration. The problem is that the person approaches this teaching with his head, i.e. as an individual with an independent mind. From the perspective of the mind, the subject of non-duality is beyond comprehension. For duality is the nature of the mind. Remember the mind is nothing but a bundle of thoughts. All thoughts are, by nature itself, in opposites. Meaning one cannot think about black without thinking about it in contrast to white. When one thinks of good, it is the opposite of bad. When one thinks of small, it is the opposite of large. So, don't try to grasp this teaching with the mind. It is only when one stops thinking, that the essence of the teaching becomes obvious. Don't forget, that you already are THAT.
It is only when this teaching is approached from the heart rather than from the mind, the simplicity of this teaching becomes obvious. We often hear of people having a heart to heart chat or communication. In a similar way, when one approaches this teaching with an open mind, without any preconceptions, without any preconceived notions, without any thoughts or ideas of "getting it", with an open heart, there is immediately the resonance with what is being pointed to. After all, it is the consciousness itself communicating with consciousness. Upon hearing this teaching, there is immediate resonance somewhere deep within, which is what many teachers point to as the heart. Approach this teaching, with earnest desire and do not worry about the outcome.